#!/bin/bash

# Fix MHVTL configuration to properly map drives to library
# Problem: Drive IDs must follow convention: Library_ID + Slot_Number
# For Library 10, drives should be 11, 12, 13, 14 (not 00, 01, 02, 03)

echo "Fixing MHVTL configuration..."

# Stop mhvtl service first
echo "Stopping mhvtl service..."
systemctl stop mhvtl

# Wait for processes to stop
sleep 2

# Backup current configuration
cp /etc/mhvtl/device.conf /etc/mhvtl/device.conf.backup-$(date +%Y%m%d-%H%M%S)
cp /etc/mhvtl/library_contents.10 /etc/mhvtl/library_contents.10.backup-$(date +%Y%m%d-%H%M%S)

# Fix device.conf: Change Drive IDs from 00,01,02,03 to 11,12,13,14
echo "Updating device.conf..."
sed -i 's/^Drive: 00 /Drive: 11 /' /etc/mhvtl/device.conf
sed -i 's/^Drive: 01 /Drive: 12 /' /etc/mhvtl/device.conf
sed -i 's/^Drive: 02 /Drive: 13 /' /etc/mhvtl/device.conf
sed -i 's/^Drive: 03 /Drive: 14 /' /etc/mhvtl/device.conf

# Fix library_contents.10: Map drive slots to correct drive IDs
echo "Updating library_contents.10..."
sed -i 's/^Drive 1: 00$/Drive 1: 11/' /etc/mhvtl/library_contents.10
sed -i 's/^Drive 2: 01$/Drive 2: 12/' /etc/mhvtl/library_contents.10
sed -i 's/^Drive 3: 02$/Drive 3: 13/' /etc/mhvtl/library_contents.10
sed -i 's/^Drive 4: 03$/Drive 4: 14/' /etc/mhvtl/library_contents.10

# Remove old lock files
rm -f /var/lock/mhvtl/mhvtl* 2>/dev/null || true

# Verify changes
echo ""
echo "=== Updated device.conf ==="
grep -E "^(Library|Drive):" /etc/mhvtl/device.conf
echo ""
echo "=== Updated library_contents.10 ==="
head -10 /etc/mhvtl/library_contents.10
echo ""

# Start mhvtl service
echo "Starting mhvtl service..."
systemctl start mhvtl

# Wait for devices to initialize
sleep 3

# Check status
echo ""
echo "=== MHVTL Service Status ==="
systemctl status mhvtl --no-pager -l

echo ""
echo "=== Running Processes ==="
ps aux | grep -E "(vtltape|vtllibrary)" | grep -v grep

echo ""
echo "=== SCSI Devices ==="
lsscsi -g

echo ""
echo "Fix completed!"